A blowing and filling system used between casing and inner pipe in pipe jacking construction

Abstract

The present invention provides a blowing and filling system between the casing and the inner pipe in pipe jacking construction, comprising an external concrete casing, an inner steel pipe, a sand blowing system, a top sliding track system, and a pipeline sliding system; the sand blowing system is installed on the top sliding track system through the pipeline sliding system; wherein, the top sliding track system is arranged on the top of the inner wall of the external concrete casing. Beneficial effects of the present invention: the blowing and filling system between the casing and the inner pipe in the present invention, through the top sliding track system and the pipeline sliding system, enables the sand blown out from the pipe mouth of the sand blowing pipe to be evenly filled from bottom to top along the two side arc surfaces of the inner steel pipe, thereby effectively reducing the number of sand blowing pipes used and reducing the installation and disassembly time while ensuring the safety of blowing and filling and improving the quality of blowing and filling, while improving the blowing and filling effect and reducing the cost of the sand blowing project.

Description

Technical Field

[0001] The invention belongs to the field of pipe jacking construction, and in particular relates to a blowing and filling system between a casing and an inner pipe used in pipe jacking construction. Background Art

[0002] Currently, the primary method for filling the gap between the outer concrete casing of a jacking pipe and the inner steel pipe is through pre-set sandblasting pipes. However, whether using one-way or two-way sandblasting, the placement of the sandblasting material cannot be accurately controlled during the filling process. Even the more advanced wet sandblasting method requires pre-buried sandblasting pipes of varying lengths. Due to the limitations of their installation locations, the quality of the sandblasting is difficult to control. In other words, existing sandblasting devices cannot ensure that the sandblasting material is evenly and completely filled between the outer concrete casing of a jacking pipe and the inner steel pipe. Therefore, a simple, efficient, high-quality, and environmentally friendly filling device has long been a research direction in the industry. Summary of the Invention

[0003] In view of this, the present invention aims to propose a blowing and filling system between the casing and the inner pipe in pipe jacking construction, so as to reduce the number of sand blasting pipes used, shorten the installation and disassembly time, and improve the blowing and filling effect.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A blowing and filling system for use between a casing and an inner pipe in pipe jacking construction, comprising an outer concrete casing, an inner steel pipe, and a sand blowing system; wherein the inner steel pipe is arranged inside the outer concrete casing, and is characterized in that it also includes a top sliding track system and a pipe sliding system;

[0006] The sand blowing system includes a sand blowing pump and a sand blowing pipe; wherein the sand blowing pump is connected to the sand blowing pipe.

[0007] The top sliding track system is installed on the top of the inner wall of the outer concrete casing;

[0008] The pipeline sliding system is configured to pull the pipe opening of the sand blasting pipe to slide on the top sliding track system.

[0009] Furthermore, the top sliding track system includes a concrete casing embedded steel plate and a sliding track.

[0010] The concrete casing embedded steel plate is fixed to the top of the inner wall of the external concrete casing;

[0011] The sliding track is installed at the bottom of the concrete casing embedded steel plate.

[0012] Furthermore, the pipeline sliding system includes a sliding vertical connecting rod, a sliding horizontal connecting rod, a sliding horizontal wheel and a pipe clamp.

[0013] The sliding horizontal connecting rod is arranged on the sliding track;

[0014] The sliding horizontal wheels are arranged at both ends of the sliding horizontal connecting rod;

[0015] The pipe clamp is connected to the sliding horizontal connecting rod through the sliding vertical connecting rod; wherein the sand blasting pipe is fixed by the pipe clamp,

[0016] Wherein, the pipeline sliding system slides in the top sliding track system through the sliding horizontal wheels.

[0017] Furthermore, the pipe clamp is a semi-annular structure divided into upper and lower parts.

[0018] Furthermore, the pipeline sliding system also includes a pipe clamp connecting screw and a pipe clamp connecting nut, which are used to clamp the two semi-annular structures of the pipe clamp, thereby fixing the pipe opening of the sand blasting pipe.

[0019] Furthermore, it also includes a video monitoring device installed on the pipe clamp for real-time monitoring of the filling situation inside the concrete casing.

[0020] Furthermore, it also includes a pressure monitoring device installed on the pipe clamp for detecting the sand blowing pressure.

[0021] Furthermore, it also includes a movable connecting ring fixed on the pipe clamp.

[0022] Furthermore, it also includes a retraction rope, which is provided on the movable connecting ring and is used to pull the sand blasting system back.

[0023] Furthermore, it also includes a filling traction rope, which is arranged on the movable connecting ring and is used to pull the sand blowing system forward.

[0024] Compared with the prior art, the blow-fill system for use between the casing and the inner pipe in pipe jacking construction described in the present invention has the following beneficial effects:

[0025] The blowing and filling system for pipe jacking construction and inner pipes described in the present invention, through the top sliding track system and the pipeline sliding system, makes the sand blowing pipe mouth always at the top of the inner wall of the concrete casing, thereby, the sand blown out from the sand blowing pipe mouth can be evenly filled from bottom to top along the two side arc surfaces of the inner steel pipe to the top of the outer concrete casing, so that the sand can fill the gap between the outer concrete casing and the inner steel pipe. In summary, through the blowing and filling system for pipe jacking construction and inner pipes described in the present invention, under the premise of ensuring blowing and filling safety and improving blowing and filling quality, the number of sand blowing pipes used is effectively reduced, the installation and disassembly time is reduced, and at the same time the blowing and filling effect is improved, and the sand blowing project cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 Schematic diagram of a blow-fill system between a casing and an inner pipe in pipe jacking construction according to an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional schematic diagram of a blow-fill system between a casing and an inner pipe in pipe jacking construction according to an embodiment of the present invention;

[0029] Figure 3 A schematic cross-sectional view of a top sliding track system and a pipeline sliding system of a blow-fill system between a casing and an inner pipe in pipe jacking construction according to an embodiment of the present invention;

[0030] Figure 4 This is a partial detailed schematic diagram of a blowing and filling system between a casing and an inner pipe in pipe jacking construction according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1-External concrete casing; 2-Inner steel pipe; 3-Sand blowing system; 31-Sand blowing pump; 32-Sand blowing pipe; 4-Top sliding track system; 41-Concrete casing embedded steel plate; 42-Sliding track; 5-Pipeline sliding system; 51-Sliding vertical connecting rod; 52-Sliding horizontal connecting rod; 53-Sliding horizontal wheel; 54-Pipe clamp; 541-Pipe clamp connecting screw; 542-Pipe clamp connecting nut; 6-Video monitoring device; 7-Pressure monitoring device; 8-Moving connecting ring; 9-Retraction traction rope; 10-Filling traction rope. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0035] like Figure 1 and Figure 2 As shown, Figure 1 Schematic diagram of a blow-fill system between a casing and an inner pipe in pipe jacking construction according to an embodiment of the present invention; Figure 2 The present invention is a schematic cross-sectional view of a blowing and filling system between a casing and an inner pipe in pipe jacking construction according to an embodiment of the present invention.

[0036] A blowing and filling system for use between a casing and an inner pipe in pipe jacking construction, comprising an outer concrete casing 1, an inner steel pipe 2, and a sand blowing system 3; wherein the inner steel pipe 2 is disposed inside the outer concrete casing 1, and is characterized in that it further comprises a top sliding track system 4 and a pipe sliding system 5;

[0037] The sand blowing system 3 includes a sand blowing pump 31 and a sand blowing pipe 32 ; wherein the sand blowing pump 31 is connected to the sand blowing pipe 32 .

[0038] The top sliding track system 4 is installed on the top of the inner wall of the external concrete casing 1;

[0039] The pipeline sliding system 5 is configured to pull the pipe opening of the sand blasting pipe 32 to slide on the top sliding track system 4 .

[0040] It should be noted that the sand blasting pump 31 can be placed in a sand blasting working pit. The sand blasting working pit can be selected based on the location, surrounding environment, and importance of the jacking pit and the receiving pit, with the receiving pit being preferred as the working pit for sand blasting. One end of the sand blasting pipe 32 is connected to the sand blasting pump 31, and the other end is connected to the pipeline sliding system 5. The pipe sliding system 5 pulls the pipe sliding system 5 to slide within the top sliding track system 4.

[0041] The present invention describes a blowing and filling system for pipe jacking construction and inner pipes, which drives the pipe opening of the sand blowing pipe 32 in the sand blowing system 3 to slide in the top sliding track system 4 arranged at the top of the inner wall of the external concrete casing 1 through the pipeline sliding system 5, thereby filling sand between the concrete casing and the inner pipe.

[0042] The present invention describes a blowing and filling system for pipe jacking construction and inner pipes. Through the top sliding track system 4 and the pipeline sliding system 5, the mouth of the sand blowing pipe 32 is always at the top of the inner wall of the concrete casing. As a result, the sand blown out from the mouth of the sand blowing pipe 32 can be evenly filled from bottom to top along the two side arc surfaces of the inner steel pipe 2 to the top of the external concrete casing 1, so that the sand can fill the gap between the external concrete casing 1 and the inner steel pipe 2.

[0043] The top sliding track system 4 includes a concrete casing embedded steel plate 41 and a sliding track 42.

[0044] The concrete casing embedded steel plate 41 is fixed to the top of the inner wall of the external concrete casing 1;

[0045] The sliding track 42 is installed at the bottom of the concrete casing embedded steel plate 41.

[0046] It should be noted that the concrete casing embedded steel plate 41 can be set at a certain interval on the top of the inner wall of the external concrete casing 1. Specifically, during the process of jacking the external concrete casing 1, the external concrete casing 1 with the concrete casing embedded steel plate 41 can be installed at a preset distance interval, and during the installation process, it is important to make sure that the part with the concrete casing embedded steel plate 41 is facing the top. In addition, after the jacking construction of the external concrete casing 1 is completed, the sliding track 42 is fixed to the bottom of the concrete casing embedded steel plate 41 to form a continuous sliding track 42, which is used for the pipeline sliding system 5 to pull the sand blasting pipe 32 to slide along the sliding track 42.

[0047] The pipeline sliding system 5 includes a sliding vertical connecting rod 51, a sliding horizontal connecting rod 52, a sliding horizontal wheel 53 and a pipe clamp 54.

[0048] The sliding horizontal connecting rod 52 is provided on the sliding track 42;

[0049] The sliding horizontal wheels 53 are provided at both ends of the sliding horizontal connecting rod 52;

[0050] The pipe clamp 54 is connected to the sliding horizontal connecting rod 52 through the sliding vertical connecting rod 51; wherein, the sand blasting pipe 32 is fixed by the pipe clamp 54.

[0051] The pipeline sliding system 5 slides in the top sliding rail system 4 via the sliding horizontal wheels 53 .

[0052] Furthermore, the pipeline sliding system 5 also includes a pipe clamp 54 connecting screw and a pipe clamp 54 connecting nut, which are used to clamp the two semi-annular structures of the pipe clamp 54 and then fix the pipe opening of the sand blasting pipe 32.

[0053] It should be noted that the pipe clamp 54 is a semi-annular structure with two upper and lower parts. The pipe clamp 54 is used to lock the nozzle of the sand blasting pipe 32 via the pipe clamp 54 connecting screw and the pipe clamp 54 connecting nut. In addition, the sliding horizontal wheel 53 is configured to move on the sliding track 42. Therefore, the nozzle of the sand blasting pipe 32 can slide along the sliding track 42 through the pipeline sliding system 5.

[0054] Furthermore, the blowing and filling system between the casing and the inner pipe in the pipe jacking construction also includes a video monitoring device 6, which is installed on the pipe clamp 54 and is used to monitor the blowing and filling situation inside the concrete casing in real time.

[0055] It should be noted that the video monitoring device 6 can monitor the filling situation inside the concrete casing in real time so that corresponding adjustments can be made in time when problems occur.

[0056] Furthermore, the blowing and filling system between the casing and the inner pipe in the pipe jacking construction further includes a pressure monitoring device 7 installed on the pipe clamp 54 for detecting the sand blowing pressure.

[0057] It should be noted that the pressure monitoring device 7 can monitor the sand blasting pressure in real time so that corresponding adjustments can be made in time when problems occur.

[0058] Furthermore, the blowing and filling system between the casing and the inner pipe in the jacking construction also includes a movable connecting ring 8 fixed on the pipe clamp 54.

[0059] Furthermore, the blowing and filling system between the casing and the inner pipe in the pipe jacking construction also includes a retraction rope 9, which is arranged on the movable connecting ring 8 and is used to pull the sand blowing system 3 back.

[0060] Furthermore, the blowing and filling system between the casing and the inner pipe in the jacking construction also includes a filling traction rope 10, which is arranged on the movable connecting ring 8 and is used to pull the sand blowing system 3 forward.

[0061] It should be noted that the sand blasting process is to first insert the sand blasting pipe 32 into the deepest part of the concrete casing to start sand blasting. After the space between the innermost concrete casing and the inner pipe is filled with sand, the sand blasting system 3 is pulled back while filling sand through the retraction rope 9 provided on the movable connecting ring 8 until the gap between the concrete casing and the inner pipe is filled with sand.

[0062] During the sand blasting process, at the beginning, the area to be filled is large, the amount of sand blasted is large, and the sand blasting height rises slowly. Therefore, a higher sand blasting pressure can be appropriately selected to speed up the sand blasting progress. After the sand blasting height reaches 2 / 3 of the height of the inner steel pipe, the area to be filled is small, the amount of sand blasted decreases, and the sand blasting height rises rapidly. Therefore, the sand blasting pressure should be appropriately reduced to slow down the sand blasting progress and reduce the impact on the blind plate.

[0063] At the same time, the pressure monitoring device 7 and the video monitoring device 6 are used to dynamically monitor the sand blasting pressure, position, elevation, gaps, etc. If the sand blasting pressure is too high and the sand blasting volume stagnates, the sand blasting operation is suspended. By controlling the retraction traction rope 9, the sand blasting pipe 32 is retracted to 15 meters (the present invention does not impose any restrictions on the retraction distance), and then the sand blasting is continued; if the video monitoring device 6 shows that the sand blasting area has slipped, the sand blasting operation is suspended. By controlling the filling traction rope 10, the sand blasting pipe 32 is moved forward (a small hole can be opened at the deepest part of the concrete casing for passing the filling traction rope), and then the sand blasting is continued. The sand blasting pressure is excessive and the sand blasting volume stagnates, and the sand blasting operation is suspended, and the control of the retraction traction rope 9 is repeated. The method of pulling the retraction traction rope 9 and the filling traction rope 10 can be manual traction or controlled by a motor. However, the present invention does not impose any restrictions on the traction method of the retraction traction rope 9 and the filling traction rope 10.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blowing and filling system between a casing and an inner pipe in pipe jacking construction, comprising an outer concrete casing (1), an inner steel pipe (2) and a sand blowing system (3); wherein: The inner steel pipe (2) is arranged inside the outer concrete casing (1), and is characterized in that it also includes a top sliding track system (4) and a pipeline sliding system (5); The sand blowing system (3) comprises a sand blowing pump (31) and a sand blowing pipe (32); wherein the sand blowing pump (31) is connected to the sand blowing pipe (32); The top sliding track system (4) is installed on the top of the inner wall of the outer concrete casing (1); The pipeline sliding system (5) is configured to pull the nozzle of the sand blasting pipe (32) to slide on the top sliding track system (4); The top sliding track system (4) includes a concrete casing embedded steel plate (41) and a sliding track (42). The concrete casing embedded steel plate (41) is fixed to the top of the inner wall of the external concrete casing (1); The sliding track (42) is installed at the bottom of the concrete casing embedded steel plate (41); The pipeline sliding system (5) includes a sliding vertical connecting rod (51), a sliding horizontal connecting rod (52), a sliding horizontal wheel (53) and a pipe clamp (54); The sliding horizontal connecting rod (52) is arranged on the sliding track (42); The sliding horizontal wheels (53) are arranged at both ends of the sliding horizontal connecting rod (52); The pipe clamp (54) is connected to the sliding horizontal connecting rod (52) through the sliding vertical connecting rod (51); wherein the sand blasting pipe (32) is fixed by the pipe clamp (54); wherein the pipeline sliding system (5) slides in the top sliding track system (4) via the sliding horizontal wheels (53); It also includes a pressure monitoring device (7) installed on the pipe clamp (54) for detecting the sand blasting pressure; It also includes a movable connecting ring (8) fixed on the pipe hoop (54).

2. A blowing and filling system for use between casing and inner pipe in pipe jacking construction according to claim 1, characterized in that: The pipe hoop (54) is a semi-annular structure with upper and lower parts.

3. A blowing and filling system for use between casing and inner pipe in pipe jacking construction according to claim 2, characterized in that: The pipeline sliding system (5) also includes a pipe clamp (54) connecting screw and a pipe clamp (54) connecting nut, which are used to clamp the two semi-annular structures of the pipe clamp (54) and thereby fix the pipe opening of the sand blasting pipe (32).

4. The blowing and filling system between the casing and the inner pipe in pipe jacking construction according to claim 1 is characterized in that: It also includes a retraction rope (9) which is arranged on the movable connecting ring (8) and is used for retracting the sand blowing system (3).

5. The blowing and filling system between the casing and the inner pipe in pipe jacking construction according to claim 1 is characterized in that: It also includes a filling traction rope (10) which is arranged on the movable connecting ring (8) and is used to pull the sand blowing system (3) forward.

Images